What slicer do you use? Was it Cloud Slicer in 3DPrinterOS cloud? If yes, then do you use default slicing profile for Anet A8 Desktop Prusa i3 printer or made a custom one?
We have next starting gcodes used for bed temperature setting (for bed temperature 100deg for example)
Is it correct gcodes for your printer? Can you send a correctly working gcode file (maybe sliced using some other software) so we can fix our start gcodes? Please send file to firstname.lastname@example.org and let us know in forum